100 mm field gun M1944 (BS-3)
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The 100 mm field gun M1944 (BS-3) is a Soviet 100 mm anti-tank and field gun. Wikipedia
Shell: 100 × 695 mmR; (R/147mm)
Barrel length: Bore: 5.34 m (17 ft 6 in) L/53.5; Overall: 5.96 m (19 ft 7 in) L/59.6; (with muzzle brake)
Caliber: 100 mm (3.93 in)
Crew: 6 to 8
Maximum firing range: 20 km (12.42 mi)
Muzzle velocity: 900 m/s (2,953 ft/s)
Place of origin: Soviet Union